/* ============================================================
   IREFROC — sistema de diseño
   Concepto: "plano de una empresa real". Tinta + ámbar + papel,
   con detalle técnico (línea fina, etiquetas monospace) que evoca
   los esquemas eléctricos y de fontanería. Sobrio, sólido, creíble.
   ============================================================ */

:root {
  --ink:      #15202e;   /* tinta navy dominante */
  --ink-2:    #1d2c3e;   /* navy ligeramente más claro */
  --paper:    #f4efe4;   /* papel cálido (fondo claro) */
  --paper-2:  #ece5d6;   /* papel sombra */
  --white:    #fffdf8;   /* blanco cálido para tarjetas */
  --amber:    #e0892b;   /* ámbar/cobre — acento "corriente" */
  --amber-d:  #c06f18;   /* ámbar oscuro hover */
  --agua:     #2f6d6a;   /* teal "agua" — acento secundario, fontanería */
  --line:     #c9bfa9;   /* línea técnica sobre papel */
  --line-ink: #34465c;   /* línea técnica sobre tinta */
  --muted:    #5e6b78;   /* texto secundario */
  --muted-pl: #9fb0c0;   /* texto secundario sobre tinta */
  --ok:       #2f6d6a;

  --maxw: 1180px;
  --r: 4px;              /* radios contenidos: estética técnica, no redondeada */

  --display: "Bricolage Grotesque", Georgia, serif;
  --body: "Schibsted Grotesk", system-ui, sans-serif;
  --mono: "Spline Sans Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  font-size: 17px;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ---------- tipografía ---------- */
h1, h2, h3, h4 { font-family: var(--display); font-weight: 800; line-height: 1.05; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.4rem, 6vw, 4.2rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.9rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.6rem); }
p { max-width: 65ch; }

.label {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber-d);
  font-weight: 500;
}
.label--pl { color: var(--amber); }

/* ---------- layout ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: clamp(56px, 9vw, 110px) 0; }
.section--ink { background: var(--ink); color: var(--paper); }
.section--ink h1, .section--ink h2, .section--ink h3 { color: var(--white); }
.section--ink p { color: var(--muted-pl); }
.section--paper2 { background: var(--paper-2); }

.grid { display: grid; gap: 28px; }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }

/* ---------- header ---------- */
.hdr {
  position: sticky; top: 0; z-index: 50;
  background: rgba(21,32,46,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line-ink);
  color: var(--paper);
}
.hdr__in { display: flex; align-items: center; justify-content: space-between; gap: 20px; height: 68px; }
.brand { display: flex; align-items: baseline; gap: 8px; font-family: var(--display); font-weight: 800; font-size: 1.45rem; letter-spacing: 0.02em; color: var(--white); }
.brand b { color: var(--amber); }
.brand span { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.15em; color: var(--muted-pl); font-weight: 400; align-self: center; }
.nav { display: flex; gap: 26px; align-items: center; }
.nav a { font-size: 0.95rem; color: var(--paper); opacity: 0.85; transition: opacity .2s, color .2s; }
.nav a:hover { opacity: 1; color: var(--amber); }
.hdr__cta { display: flex; gap: 10px; align-items: center; }
.navtoggle { display: none; background: none; border: 1px solid var(--line-ink); color: var(--paper); width: 42px; height: 38px; border-radius: var(--r); cursor: pointer; font-size: 1.2rem; }

/* ---------- botones ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--body); font-weight: 600; font-size: 0.95rem;
  padding: 12px 20px; border-radius: var(--r); cursor: pointer;
  border: 1.5px solid transparent; transition: transform .15s, background .2s, color .2s; white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn--amber { background: var(--amber); color: var(--ink); }
.btn--amber:hover { background: var(--amber-d); color: var(--white); }
.btn--wa { background: #25d366; color: #07301a; }
.btn--wa:hover { background: #1eb858; }
.btn--ghost { border-color: var(--line-ink); color: var(--paper); }
.btn--ghost:hover { border-color: var(--amber); color: var(--amber); }
.btn--ink { background: var(--ink); color: var(--paper); }
.btn--ink:hover { background: var(--ink-2); }
.btn--lg { padding: 16px 28px; font-size: 1.05rem; }

/* ---------- hero ---------- */
.hero { position: relative; background: var(--ink); color: var(--paper); overflow: hidden; }
.hero__grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(var(--line-ink) 1px, transparent 1px), linear-gradient(90deg, var(--line-ink) 1px, transparent 1px);
  background-size: 44px 44px; opacity: 0.25;
  mask-image: radial-gradient(ellipse 80% 70% at 70% 30%, #000 30%, transparent 75%);
}
.hero__in { position: relative; padding: clamp(60px, 11vw, 130px) 0 clamp(50px, 8vw, 96px); }
.hero h1 { color: var(--white); max-width: 16ch; }
.hero h1 em { font-style: normal; color: var(--amber); }
.hero__sub { font-size: 1.2rem; color: var(--muted-pl); max-width: 52ch; margin: 22px 0 32px; }
.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero__meta { margin-top: 40px; display: flex; gap: 28px; flex-wrap: wrap; }
.hero__meta div { border-left: 2px solid var(--amber); padding-left: 12px; }
.hero__meta strong { display: block; font-family: var(--display); font-size: 1.05rem; color: var(--white); }
.hero__meta span { font-family: var(--mono); font-size: 0.7rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted-pl); }

/* ---------- barra de confianza ---------- */
.trust { background: var(--amber); color: var(--ink); }
.trust__in { display: flex; flex-wrap: wrap; gap: 14px 36px; justify-content: center; padding: 18px 24px; font-family: var(--mono); font-size: 0.8rem; letter-spacing: .04em; font-weight: 500; }
.trust__in span { display: inline-flex; align-items: center; gap: 8px; }

/* ---------- tarjetas ---------- */
.card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--r);
  padding: 30px; position: relative; transition: transform .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 16px 40px -22px rgba(21,32,46,.5); }
.card__tag { font-family: var(--mono); font-size: 0.68rem; letter-spacing: .14em; text-transform: uppercase; color: var(--amber-d); }
.card h3 { margin: 10px 0 10px; }
.card--agua .card__tag { color: var(--agua); }
.card ul { list-style: none; margin-top: 14px; }
.card ul li { padding: 6px 0 6px 22px; position: relative; border-top: 1px dashed var(--line); font-size: 0.95rem; }
.card ul li:first-child { border-top: none; }
.card ul li::before { content: "→"; position: absolute; left: 0; color: var(--amber); }

/* ---------- contraste nosotros vs anónimos ---------- */
.versus { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.versus > div { padding: 28px; }
.versus__them { background: var(--paper-2); }
.versus__us { background: var(--ink); color: var(--paper); }
.versus__us h3 { color: var(--amber); }
.versus__them h3 { color: var(--muted); }
.versus ul { list-style: none; margin-top: 16px; }
.versus li { padding: 10px 0; border-top: 1px solid rgba(128,128,128,.2); display: flex; gap: 10px; font-size: 0.96rem; }
.versus li::before { font-family: var(--mono); font-weight: 700; }
.versus__them li::before { content: "✕"; color: #b4524a; }
.versus__us li::before { content: "✓"; color: var(--amber); }

/* ---------- bloque destacado (boletín / B2B) ---------- */
.feature { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
.feature__box { background: var(--ink); color: var(--paper); border-radius: var(--r); padding: 40px; border-top: 4px solid var(--amber); }
.feature__box h2 { color: var(--white); }
.feature__box p { color: var(--muted-pl); }

/* ---------- proceso ---------- */
.steps { counter-reset: s; display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.steps > div { background: var(--paper); padding: 26px; counter-increment: s; }
.steps > div::before { content: counter(s, decimal-leading-zero); font-family: var(--mono); color: var(--amber-d); font-size: 0.9rem; letter-spacing: .1em; }
.steps h3 { font-size: 1.15rem; margin: 8px 0 6px; }
.steps p { font-size: 0.92rem; color: var(--muted); }

/* ---------- FAQ ---------- */
.faq details { border-bottom: 1px solid var(--line); padding: 18px 0; }
.faq summary { font-family: var(--display); font-weight: 700; font-size: 1.1rem; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::after { content: "+"; color: var(--amber-d); font-family: var(--mono); }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin-top: 12px; color: var(--muted); }

/* ---------- formulario ---------- */
.form { display: grid; gap: 16px; max-width: 560px; }
.form label { font-family: var(--mono); font-size: 0.72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); display: block; margin-bottom: 6px; }
.form input, .form textarea, .form select {
  width: 100%; padding: 13px 14px; border: 1.5px solid var(--line); border-radius: var(--r);
  font-family: var(--body); font-size: 1rem; background: var(--white); color: var(--ink);
}
.form input:focus, .form textarea:focus, .form select:focus { outline: none; border-color: var(--amber); }
.form .consent { display: flex; gap: 10px; align-items: flex-start; font-size: 0.85rem; color: var(--muted); }
.form .consent input { width: auto; margin-top: 4px; }
.form__msg { padding: 14px; border-radius: var(--r); font-size: 0.95rem; display: none; }
.form__msg.ok { display: block; background: #e3efe9; color: #1e5e44; border: 1px solid #9fcab5; }

/* ---------- contacto info ---------- */
.cinfo { display: grid; gap: 18px; }
.cinfo .row { display: flex; gap: 14px; align-items: flex-start; padding: 16px 0; border-top: 1px solid var(--line); }
.cinfo .row:first-child { border-top: none; }
.cinfo .row .k { font-family: var(--mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--amber-d); min-width: 92px; padding-top: 3px; }

/* ---------- footer ---------- */
.ftr { background: var(--ink); color: var(--muted-pl); padding: 56px 0 110px; border-top: 4px solid var(--amber); }
.ftr__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 36px; }
.ftr h4 { color: var(--white); font-size: 1rem; margin-bottom: 14px; font-family: var(--mono); font-weight: 500; letter-spacing: .08em; text-transform: uppercase; }
.ftr a { color: var(--muted-pl); display: block; padding: 5px 0; }
.ftr a:hover { color: var(--amber); }
.ftr__brand { font-family: var(--display); font-size: 1.6rem; font-weight: 800; color: var(--white); }
.ftr__brand b { color: var(--amber); }
.ftr__legal { margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--line-ink); font-size: 0.8rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }

/* ---------- barra móvil fija ---------- */
.mobilebar { display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 60; background: var(--ink); border-top: 1px solid var(--line-ink); padding: 10px; gap: 10px; }
.mobilebar .btn { flex: 1; justify-content: center; }

/* ---------- intro genérica de página interior ---------- */
.phead { background: var(--ink); color: var(--paper); padding: clamp(50px,8vw,90px) 0 clamp(40px,6vw,70px); position: relative; }
.phead h1 { color: var(--white); max-width: 18ch; margin-top: 14px; }
.phead p { color: var(--muted-pl); margin-top: 16px; font-size: 1.15rem; }
.breadcrumb { font-family: var(--mono); font-size: .72rem; letter-spacing: .1em; color: var(--muted-pl); }
.breadcrumb a:hover { color: var(--amber); }

/* prosa legal */
.prose h2 { margin: 32px 0 12px; font-size: 1.5rem; }
.prose p, .prose li { color: var(--ink); margin-bottom: 12px; }
.prose ul { padding-left: 22px; }

/* reveal on load */
.reveal { opacity: 0; transform: translateY(16px); animation: rise .7s forwards; }
@keyframes rise { to { opacity: 1; transform: none; } }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .cols-2, .cols-3, .cols-4 { grid-template-columns: 1fr; }
  .feature { grid-template-columns: 1fr; }
  .versus { grid-template-columns: 1fr; }
  .ftr__grid { grid-template-columns: 1fr; }
  .nav { display: none; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; background: var(--ink); padding: 16px 24px; border-bottom: 1px solid var(--line-ink); gap: 4px; }
  .nav.open { display: flex; }
  .nav a { padding: 12px 0; border-bottom: 1px solid var(--line-ink); width: 100%; }
  .navtoggle { display: block; }
  .hdr__cta .btn--hidemob { display: none; }
  .mobilebar { display: flex; }
  .steps { grid-template-columns: 1fr; }
}
@media (min-width: 861px) { .steps { grid-template-columns: repeat(5, 1fr); } }